salt/tests/unit/test_crypt.py
2020-05-07 13:09:02 -07:00

354 lines
15 KiB
Python

# coding: utf-8
from __future__ import absolute_import
import os
import shutil
import tempfile
import salt.utils.files
from salt import crypt
from salt.ext import six
from tests.support.helpers import slowTest
from tests.support.mock import MagicMock, MockCall, mock_open, patch
from tests.support.unit import TestCase, skipIf
try:
import M2Crypto
HAS_M2 = True
except ImportError:
HAS_M2 = False
try:
from Cryptodome.PublicKey import RSA # pylint: disable=unused-import
HAS_PYCRYPTO_RSA = True
except ImportError:
HAS_PYCRYPTO_RSA = False
if not HAS_PYCRYPTO_RSA:
try:
from Crypto.PublicKey import RSA
HAS_PYCRYPTO_RSA = True
except ImportError:
HAS_PYCRYPTO_RSA = False
PRIVKEY_DATA = (
"-----BEGIN RSA PRIVATE KEY-----\n"
"MIIEpAIBAAKCAQEA75GR6ZTv5JOv90Vq8tKhKC7YQnhDIo2hM0HVziTEk5R4UQBW\n"
"a0CKytFMbTONY2msEDwX9iA0x7F5Lgj0X8eD4ZMsYqLzqjWMekLC8bjhxc+EuPo9\n"
"Dygu3mJ2VgRC7XhlFpmdo5NN8J2E7B/CNB3R4hOcMMZNZdi0xLtFoTfwU61UPfFX\n"
"14mV2laqLbvDEfQLJhUTDeFFV8EN5Z4H1ttLP3sMXJvc3EvM0JiDVj4l1TWFUHHz\n"
"eFgCA1Im0lv8i7PFrgW7nyMfK9uDSsUmIp7k6ai4tVzwkTmV5PsriP1ju88Lo3MB\n"
"4/sUmDv/JmlZ9YyzTO3Po8Uz3Aeq9HJWyBWHAQIDAQABAoIBAGOzBzBYZUWRGOgl\n"
"IY8QjTT12dY/ymC05GM6gMobjxuD7FZ5d32HDLu/QrknfS3kKlFPUQGDAbQhbbb0\n"
"zw6VL5NO9mfOPO2W/3FaG1sRgBQcerWonoSSSn8OJwVBHMFLG3a+U1Zh1UvPoiPK\n"
"S734swIM+zFpNYivGPvOm/muF/waFf8tF/47t1cwt/JGXYQnkG/P7z0vp47Irpsb\n"
"Yjw7vPe4BnbY6SppSxscW3KoV7GtJLFKIxAXbxsuJMF/rYe3O3w2VKJ1Sug1VDJl\n"
"/GytwAkSUer84WwP2b07Wn4c5pCnmLslMgXCLkENgi1NnJMhYVOnckxGDZk54hqP\n"
"9RbLnkkCgYEA/yKuWEvgdzYRYkqpzB0l9ka7Y00CV4Dha9Of6GjQi9i4VCJ/UFVr\n"
"UlhTo5y0ZzpcDAPcoZf5CFZsD90a/BpQ3YTtdln2MMCL/Kr3QFmetkmDrt+3wYnX\n"
"sKESfsa2nZdOATRpl1antpwyD4RzsAeOPwBiACj4fkq5iZJBSI0bxrMCgYEA8GFi\n"
"qAjgKh81/Uai6KWTOW2kX02LEMVRrnZLQ9VPPLGid4KZDDk1/dEfxjjkcyOxX1Ux\n"
"Klu4W8ZEdZyzPcJrfk7PdopfGOfrhWzkREK9C40H7ou/1jUecq/STPfSOmxh3Y+D\n"
"ifMNO6z4sQAHx8VaHaxVsJ7SGR/spr0pkZL+NXsCgYEA84rIgBKWB1W+TGRXJzdf\n"
"yHIGaCjXpm2pQMN3LmP3RrcuZWm0vBt94dHcrR5l+u/zc6iwEDTAjJvqdU4rdyEr\n"
"tfkwr7v6TNlQB3WvpWanIPyVzfVSNFX/ZWSsAgZvxYjr9ixw6vzWBXOeOb/Gqu7b\n"
"cvpLkjmJ0wxDhbXtyXKhZA8CgYBZyvcQb+hUs732M4mtQBSD0kohc5TsGdlOQ1AQ\n"
"McFcmbpnzDghkclyW8jzwdLMk9uxEeDAwuxWE/UEvhlSi6qdzxC+Zifp5NBc0fVe\n"
"7lMx2mfJGxj5CnSqQLVdHQHB4zSXkAGB6XHbBd0MOUeuvzDPfs2voVQ4IG3FR0oc\n"
"3/znuwKBgQChZGH3McQcxmLA28aUwOVbWssfXKdDCsiJO+PEXXlL0maO3SbnFn+Q\n"
"Tyf8oHI5cdP7AbwDSx9bUfRPjg9dKKmATBFr2bn216pjGxK0OjYOCntFTVr0psRB\n"
"CrKg52Qrq71/2l4V2NLQZU40Dr1bN9V+Ftd9L0pvpCAEAWpIbLXGDw==\n"
"-----END RSA PRIVATE KEY-----"
)
PUBKEY_DATA = (
"-----BEGIN PUBLIC KEY-----\n"
"MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA75GR6ZTv5JOv90Vq8tKh\n"
"KC7YQnhDIo2hM0HVziTEk5R4UQBWa0CKytFMbTONY2msEDwX9iA0x7F5Lgj0X8eD\n"
"4ZMsYqLzqjWMekLC8bjhxc+EuPo9Dygu3mJ2VgRC7XhlFpmdo5NN8J2E7B/CNB3R\n"
"4hOcMMZNZdi0xLtFoTfwU61UPfFX14mV2laqLbvDEfQLJhUTDeFFV8EN5Z4H1ttL\n"
"P3sMXJvc3EvM0JiDVj4l1TWFUHHzeFgCA1Im0lv8i7PFrgW7nyMfK9uDSsUmIp7k\n"
"6ai4tVzwkTmV5PsriP1ju88Lo3MB4/sUmDv/JmlZ9YyzTO3Po8Uz3Aeq9HJWyBWH\n"
"AQIDAQAB\n"
"-----END PUBLIC KEY-----"
)
MSG = b"It's me, Mario"
SIG = (
b"\x07\xf3\xb1\xe7\xdb\x06\xf4_\xe2\xdc\xcb!F\xfb\xbex{W\x1d\xe4E"
b"\xd3\r\xc5\x90\xca(\x05\x1d\x99\x8b\x1aug\x9f\x95>\x94\x7f\xe3+"
b"\x12\xfa\x9c\xd4\xb8\x02]\x0e\xa5\xa3LL\xc3\xa2\x8f+\x83Z\x1b\x17"
b'\xbfT\xd3\xc7\xfd\x0b\xf4\xd7J\xfe^\x86q"I\xa3x\xbc\xd3$\xe9M<\xe1'
b"\x07\xad\xf2_\x9f\xfa\xf7g(~\xd8\xf5\xe7\xda-\xa3Ko\xfc.\x99\xcf"
b"\x9b\xb9\xc1U\x97\x82'\xcb\xc6\x08\xaa\xa0\xe4\xd0\xc1+\xfc\x86"
b'\r\xe4y\xb1#\xd3\x1dS\x96D28\xc4\xd5\r\xd4\x98\x1a44"\xd7\xc2\xb4'
b"]\xa7\x0f\xa7Db\x85G\x8c\xd6\x94!\x8af1O\xf6g\xd7\x03\xfd\xb3\xbc"
b"\xce\x9f\xe7\x015\xb8\x1d]AHK\xa0\x14m\xda=O\xa7\xde\xf2\xff\x9b"
b"\x8e\x83\xc8j\x11\x1a\x98\x85\xde\xc5\x91\x07\x84!\x12^4\xcb\xa8"
b"\x98\x8a\x8a&#\xb9(#?\x80\x15\x9eW\xb5\x12\xd1\x95S\xf2<G\xeb\xf1"
b"\x14H\xb2\xc4>\xc3A\xed\x86x~\xcfU\xd5Q\xfe~\x10\xd2\x9b"
)
@skipIf(not HAS_PYCRYPTO_RSA, "pycrypto >= 2.6 is not available")
@skipIf(HAS_M2, "m2crypto is used by salt.crypt if installed")
class CryptTestCase(TestCase):
@slowTest
def test_gen_keys(self):
open_priv_wb = MockCall("/keydir{0}keyname.pem".format(os.sep), "wb+")
open_pub_wb = MockCall("/keydir{0}keyname.pub".format(os.sep), "wb+")
with patch.multiple(
os,
umask=MagicMock(),
chmod=MagicMock(),
access=MagicMock(return_value=True),
):
with patch("salt.utils.files.fopen", mock_open()) as m_open, patch(
"os.path.isfile", return_value=True
):
result = crypt.gen_keys("/keydir", "keyname", 2048)
assert result == "/keydir{0}keyname.pem".format(os.sep), result
assert open_priv_wb not in m_open.calls
assert open_pub_wb not in m_open.calls
with patch("salt.utils.files.fopen", mock_open()) as m_open, patch(
"os.path.isfile", return_value=False
):
crypt.gen_keys("/keydir", "keyname", 2048)
assert open_priv_wb in m_open.calls
assert open_pub_wb in m_open.calls
@patch("os.umask", MagicMock())
@patch("os.chmod", MagicMock())
@patch("os.chown", MagicMock(), create=True)
@patch("os.access", MagicMock(return_value=True))
@slowTest
def test_gen_keys_with_passphrase(self):
key_path = os.path.join(os.sep, "keydir")
open_priv_wb = MockCall(os.path.join(key_path, "keyname.pem"), "wb+")
open_pub_wb = MockCall(os.path.join(key_path, "keyname.pub"), "wb+")
with patch("salt.utils.files.fopen", mock_open()) as m_open, patch(
"os.path.isfile", return_value=True
):
self.assertEqual(
crypt.gen_keys(key_path, "keyname", 2048, passphrase="password"),
os.path.join(key_path, "keyname.pem"),
)
result = crypt.gen_keys(key_path, "keyname", 2048, passphrase="password")
assert result == os.path.join(key_path, "keyname.pem"), result
assert open_priv_wb not in m_open.calls
assert open_pub_wb not in m_open.calls
with patch("salt.utils.files.fopen", mock_open()) as m_open, patch(
"os.path.isfile", return_value=False
):
crypt.gen_keys(key_path, "keyname", 2048)
assert open_priv_wb in m_open.calls
assert open_pub_wb in m_open.calls
def test_sign_message(self):
key = RSA.importKey(PRIVKEY_DATA)
with patch("salt.crypt.get_rsa_key", return_value=key):
self.assertEqual(SIG, salt.crypt.sign_message("/keydir/keyname.pem", MSG))
def test_sign_message_with_passphrase(self):
key = RSA.importKey(PRIVKEY_DATA)
with patch("salt.crypt.get_rsa_key", return_value=key):
self.assertEqual(
SIG,
crypt.sign_message("/keydir/keyname.pem", MSG, passphrase="password"),
)
def test_verify_signature(self):
with patch("salt.utils.files.fopen", mock_open(read_data=PUBKEY_DATA)):
self.assertTrue(crypt.verify_signature("/keydir/keyname.pub", MSG, SIG))
@skipIf(not HAS_M2, "m2crypto is not available")
class M2CryptTestCase(TestCase):
@patch("os.umask", MagicMock())
@patch("os.chmod", MagicMock())
@patch("os.access", MagicMock(return_value=True))
@slowTest
def test_gen_keys(self):
with patch("M2Crypto.RSA.RSA.save_pem", MagicMock()) as save_pem:
with patch("M2Crypto.RSA.RSA.save_pub_key", MagicMock()) as save_pub:
with patch("os.path.isfile", return_value=True):
self.assertEqual(
crypt.gen_keys("/keydir", "keyname", 2048),
"/keydir{0}keyname.pem".format(os.sep),
)
save_pem.assert_not_called()
save_pub.assert_not_called()
with patch("os.path.isfile", return_value=False):
self.assertEqual(
crypt.gen_keys("/keydir", "keyname", 2048),
"/keydir{0}keyname.pem".format(os.sep),
)
save_pem.assert_called_once_with(
"/keydir{0}keyname.pem".format(os.sep), cipher=None
)
save_pub.assert_called_once_with(
"/keydir{0}keyname.pub".format(os.sep)
)
@patch("os.umask", MagicMock())
@patch("os.chmod", MagicMock())
@patch("os.chown", MagicMock())
@patch("os.access", MagicMock(return_value=True))
@slowTest
def test_gen_keys_with_passphrase(self):
with patch("M2Crypto.RSA.RSA.save_pem", MagicMock()) as save_pem:
with patch("M2Crypto.RSA.RSA.save_pub_key", MagicMock()) as save_pub:
with patch("os.path.isfile", return_value=True):
self.assertEqual(
crypt.gen_keys(
"/keydir", "keyname", 2048, passphrase="password"
),
"/keydir{0}keyname.pem".format(os.sep),
)
save_pem.assert_not_called()
save_pub.assert_not_called()
with patch("os.path.isfile", return_value=False):
self.assertEqual(
crypt.gen_keys(
"/keydir", "keyname", 2048, passphrase="password"
),
"/keydir{0}keyname.pem".format(os.sep),
)
callback = save_pem.call_args[1]["callback"]
save_pem.assert_called_once_with(
"/keydir{0}keyname.pem".format(os.sep),
cipher="des_ede3_cbc",
callback=callback,
)
self.assertEqual(callback(None), b"password")
save_pub.assert_called_once_with(
"/keydir{0}keyname.pub".format(os.sep)
)
def test_sign_message(self):
key = M2Crypto.RSA.load_key_string(six.b(PRIVKEY_DATA))
with patch("salt.crypt.get_rsa_key", return_value=key):
self.assertEqual(SIG, salt.crypt.sign_message("/keydir/keyname.pem", MSG))
def test_sign_message_with_passphrase(self):
key = M2Crypto.RSA.load_key_string(six.b(PRIVKEY_DATA))
with patch("salt.crypt.get_rsa_key", return_value=key):
self.assertEqual(
SIG,
crypt.sign_message("/keydir/keyname.pem", MSG, passphrase="password"),
)
def test_verify_signature(self):
with patch("salt.utils.files.fopen", mock_open(read_data=six.b(PUBKEY_DATA))):
self.assertTrue(crypt.verify_signature("/keydir/keyname.pub", MSG, SIG))
def test_encrypt_decrypt_bin(self):
priv_key = M2Crypto.RSA.load_key_string(six.b(PRIVKEY_DATA))
pub_key = M2Crypto.RSA.load_pub_key_bio(
M2Crypto.BIO.MemoryBuffer(six.b(PUBKEY_DATA))
)
encrypted = salt.crypt.private_encrypt(priv_key, b"salt")
decrypted = salt.crypt.public_decrypt(pub_key, encrypted)
self.assertEqual(b"salt", decrypted)
class TestBadCryptodomePubKey(TestCase):
"""
Test that we can load public keys exported by pycrpytodome<=3.4.6
"""
TEST_KEY = (
"-----BEGIN RSA PUBLIC KEY-----\n"
"MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzLtFhsvfbFDFaUgulSEX\n"
"Gl12XriL1DT78Ef2/u8HHaSMmPie37BLWas/zaHwI6066bIyYQJ/nUCahTaoHM7L\n"
"GlWc0wOU6zyfpihCRQHil05Y6F+olFBoZuYbFPvtp7/hJx/D7I/0n2o/c7M5i3Y2\n"
"3sBxAYNooIQHXHUmPQW6C9iu95ylZDW8JQzYy/EI4vCC8yQMdTK8jK1FQV0Sbwny\n"
"qcMxSyAWDoFbnhh2P2TnO8HOWuUOaXR8ZHOJzVcDl+a6ew+medW090x3K5O1f80D\n"
"+WjgnG6b2HG7VQpOCfM2GALD/FrxicPilvZ38X1aLhJuwjmVE4LAAv8DVNJXohaO\n"
"WQIDAQAB\n"
"-----END RSA PUBLIC KEY-----\n"
)
def setUp(self):
self.test_dir = tempfile.mkdtemp()
self.key_path = os.path.join(self.test_dir, "cryptodom-3.4.6.pub")
with salt.utils.files.fopen(self.key_path, "wb") as fd:
fd.write(self.TEST_KEY.encode())
def tearDown(self):
shutil.rmtree(self.test_dir)
@skipIf(not HAS_M2, "Skip when m2crypto is not installed")
def test_m2_bad_key(self):
"""
Load public key with an invalid header using m2crypto and validate it
"""
key = salt.crypt.get_rsa_pub_key(self.key_path)
assert key.check_key() == 1
@skipIf(HAS_M2, "Skip when m2crypto is installed")
def test_crypto_bad_key(self):
"""
Load public key with an invalid header and validate it without m2crypto
"""
key = salt.crypt.get_rsa_pub_key(self.key_path)
assert key.can_encrypt()
class TestM2CryptoRegression47124(TestCase):
SIGNATURE = (
b"w\xac\xfe18o\xeb\xfb\x14+\x9e\xd1\xb7\x7fe}\xec\xd6\xe1P\x9e\xab"
b"\xb5\x07\xe0\xc1\xfd\xda#\x04Z\x8d\x7f\x0b\x1f}:~\xb2s\x860u\x02N"
b'\xd4q"\xb7\x86*\x8f\x1f\xd0\x9d\x11\x92\xc5~\xa68\xac>\x12H\xc2%y,'
b"\xe6\xceU\x1e\xa3?\x0c,\xf0u\xbb\xd0[g_\xdd\x8b\xb0\x95:Y\x18\xa5*"
b"\x99\xfd\xf3K\x92\x92 ({\xd1\xff\xd9F\xc8\xd6K\x86e\xf9\xa8\xad\xb0z"
b"\xe3\x9dD\xf5k\x8b_<\xe7\xe7\xec\xf3\"'\xd5\xd2M\xb4\xce\x1a\xe3$"
b"\x9c\x81\xad\xf9\x11\xf6\xf5>)\xc7\xdd\x03&\xf7\x86@ks\xa6\x05\xc2"
b"\xd0\xbd\x1a7\xfc\xde\xe6\xb0\xad!\x12#\xc86Y\xea\xc5\xe3\xe2\xb3"
b"\xc9\xaf\xfa\x0c\xf2?\xbf\x93w\x18\x9e\x0b\xa2a\x10:M\x05\x89\xe2W.Q"
b"\xe8;yGT\xb1\xf2\xc6A\xd2\xc4\xbeN\xb3\xcfS\xaf\x03f\xe2\xb4)\xe7\xf6"
b'\xdbs\xd0Z}8\xa4\xd2\x1fW*\xe6\x1c"\x8b\xd0\x18w\xb9\x7f\x9e\x96\xa3'
b"\xd9v\xf7\x833\x8e\x01"
)
@skipIf(not HAS_M2, "Skip when m2crypto is not installed")
def test_m2crypto_verify_bytes(self):
message = salt.utils.stringutils.to_unicode("meh")
with patch("salt.utils.files.fopen", mock_open(read_data=six.b(PUBKEY_DATA))):
salt.crypt.verify_signature("/keydir/keyname.pub", message, self.SIGNATURE)
@skipIf(not HAS_M2, "Skip when m2crypto is not installed")
def test_m2crypto_verify_unicode(self):
message = salt.utils.stringutils.to_bytes("meh")
with patch("salt.utils.files.fopen", mock_open(read_data=six.b(PUBKEY_DATA))):
salt.crypt.verify_signature("/keydir/keyname.pub", message, self.SIGNATURE)
@skipIf(not HAS_M2, "Skip when m2crypto is not installed")
def test_m2crypto_sign_bytes(self):
message = salt.utils.stringutils.to_unicode("meh")
key = M2Crypto.RSA.load_key_string(six.b(PRIVKEY_DATA))
with patch("salt.crypt.get_rsa_key", return_value=key):
signature = salt.crypt.sign_message(
"/keydir/keyname.pem", message, passphrase="password"
)
self.assertEqual(signature, self.SIGNATURE)
@skipIf(not HAS_M2, "Skip when m2crypto is not installed")
def test_m2crypto_sign_unicode(self):
message = salt.utils.stringutils.to_bytes("meh")
key = M2Crypto.RSA.load_key_string(six.b(PRIVKEY_DATA))
with patch("salt.crypt.get_rsa_key", return_value=key):
signature = salt.crypt.sign_message(
"/keydir/keyname.pem", message, passphrase="password"
)
self.assertEqual(signature, self.SIGNATURE)